The processing method of the gas concentration signal in Raman Gas Analyzer

A technology of gas concentration and Raman gas, applied in the field of signal processing, to meet the requirements, meet the response time, and eliminate random noise interference

Active Publication Date: 2018-01-23
WUHAN CUBIC OPTOELECTRONICS
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Problems solved by technology

[0002] In the laser Raman gas analyzer, in order to ensure the accuracy of the measurement, the measured gas concentration signal can be processed, and the processing method is the superposition method to amplify the gas concentration signal, but these need to be at the expense of the response time

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  • The processing method of the gas concentration signal in Raman Gas Analyzer

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Embodiment

[0040] Concrete steps of the present invention are as follows:

[0041] 1) Obtain the original spectral signal;

[0042] 2) Spectral signal preprocessing, the spectral signal preprocessing method refers to the method of amplifying the gas concentration signal by the superposition method. In order to reduce the response time, the number of superpositions is relatively small.

[0043] 3) Calculate the gas concentration of each component;

[0044] 4) Judging whether the high concentration signal is stable, if it is unstable, directly output the gas concentration of each component; if it is stable, perform secondary processing of the low concentration spectral signal, then recalculate the gas concentration of each component, and then output each component gas concentration. Among them, the secondary processing method of the low-concentration spectral signal refers to the method of amplifying the gas concentration signal by the superposition method. In order to improve the measur...

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Abstract

The invention relates to a method for processing gas concentration signals in a Raman gas analyzer, which relates to a signal processing method, in particular to a method for processing gas concentration signals in a Raman gas analyzer. The specific steps are as follows: 1) Obtaining the original spectral signal ;2) Spectral signal preprocessing; 3) Calculating the gas concentration of each component; 4) Judging whether the high concentration signal is stable, if not, directly output the gas concentration of each component; First process, then recalculate the gas concentration of each component, and then output the gas concentration of each component. The method of the invention can not only effectively eliminate the influence of random noise interference, ensure the accuracy of measurement, but also meet the requirement of response time.

Description

technical field [0001] The invention relates to a signal processing method, in particular to a method for processing gas concentration signals in a Raman gas analyzer. Background technique [0002] In the laser Raman gas analyzer, in order to ensure the accuracy of the measurement, the measured gas concentration signal can be processed, and the processing method is the superposition method to amplify the gas concentration signal, but these need to be at the expense of the response time. The invention solves the contradiction between the measurement accuracy and the response time of the instrument. Contents of the invention [0003] The invention mainly solves the technical problems existing in the prior art; it provides a method that can not only effectively eliminate the influence of random noise interference, ensure the accuracy of measurement, but also meet the requirement of response time. [0004] Above-mentioned technical problem of the present invention is mainly s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/65
Inventor 熊友辉刘志强聂晓楠江坤田蕾石平静
Owner WUHAN CUBIC OPTOELECTRONICS
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